Story behind NASA’s Smiling Sun picture

NASA, in a newly released satellite image, said the sun was seen ‘smiling.

This smiling sun can be seen in a new image from NASA’s Solar Dynamics Observatory.

The photo was captured by NASA’s Solar Dynamics Observatory, a program working to understand the changes in the Sun’s radiation output.

Sharing the snap on Twitter, @NASASun wrote: “Say cheese! Today, #NASA‘s Solar Dynamics Observatory caught the Sun “smiling.”

“Seen in ultraviolet light, these dark patches on the Sun are known as coronal holes and are regions where fast solar wind gushes out into space.”

The “eyes” and “mouth” on the surface of the sun are coronal holes.

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